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JPH06173772A - 逆推進装置内壁およびそのサンドイッチ構造 - Google Patents

逆推進装置内壁およびそのサンドイッチ構造

Info

Publication number
JPH06173772A
JPH06173772A JP5195682A JP19568293A JPH06173772A JP H06173772 A JPH06173772 A JP H06173772A JP 5195682 A JP5195682 A JP 5195682A JP 19568293 A JP19568293 A JP 19568293A JP H06173772 A JPH06173772 A JP H06173772A
Authority
JP
Japan
Prior art keywords
honeycomb core
wall
layer
sandwich structure
top layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP5195682A
Other languages
English (en)
Inventor
Francis W Moore
フランシス・ダブリュ・ムーア
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Boeing Co
Original Assignee
Boeing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Boeing Co filed Critical Boeing Co
Publication of JPH06173772A publication Critical patent/JPH06173772A/ja
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • B29C70/088—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers and with one or more layers of non-plastics material or non-specified material, e.g. supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/12—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by the relative arrangement of fibres or filaments of different layers, e.g. the fibres or filaments being parallel or perpendicular to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/36—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels
    • E04C2/365—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels by honeycomb structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
    • F02K1/54—Nozzles having means for reversing jet thrust
    • F02K1/64—Reversing fan flow
    • F02K1/70—Reversing fan flow using thrust reverser flaps or doors mounted on the fan housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/02—Cellular or porous
    • B32B2305/024—Honeycomb
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/20—Three-dimensional
    • F05D2250/28—Three-dimensional patterned
    • F05D2250/283—Three-dimensional patterned honeycomb
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23—Sheet including cover or casing
    • Y10T428/234—Sheet including cover or casing including elements cooperating to form cells
    • Y10T428/236—Honeycomb type cells extend perpendicularly to nonthickness layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24149—Honeycomb-like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24149—Honeycomb-like
    • Y10T428/24165—Hexagonally shaped cavities
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2918—Rod, strand, filament or fiber including free carbon or carbide or therewith [not as steel]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/30—Self-sustaining carbon mass or layer with impregnant or other layer

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Laminated Bodies (AREA)

Abstract

(57)【要約】 【目的】 重量欠点を実質的に低減し、腐食しやすさを
回避し、壁の強さを維持し、かつ適切な熱電導性を維持
して絶縁の必要性を低減する、逆推進装置内壁構造を提
供する。 【構成】 最上層（２０）と底部層（３８）との間に挟
まれた熱伝導性の非金属炭素ピッチ繊維ハニカムコア
（３０）を含む逆推進装置内壁構造（１０）である。コ
ア（３０）は接着剤の網状層によって穴あき炭素繊維最
上層（２０）へ、かつ非金属非穴あき炭素繊維強化布の
ベース層（３８）へ接着される。

Description

【発明の詳細な説明】
【０００１】
【発明の背景】典型的な商業航空機ガスタービンエンジ
ンは逆推進装置カウリングナセルを含む。ナセル構造は
分岐部で結合された内部カウルおよび外部カウルからな
る。エンジン空気流は２つのカウルの間の環状キャビテ
ィを流れる。内部カウルまたは壁は、エンジンケース、
補機部品およびその中に設置されたダクトを覆う。エン
ジンケースは１１００°Ｆまでの高温であるので、逆推
進装置内壁と呼ばれる内部カウルの内部表面は高い放射
エネルギに露出される。
【０００２】逆推進装置内壁構造は一般にアルミニウム
外板、アルミニウムハニカムコアおよびエンジンケース
に隣接した高温の表面上に与えれた絶縁層から作られ
る。この金属逆推進装置内壁は、熱をエンジンから空気
流に隣接した表面へ伝導するのに有効である。しかしな
がら、すべての金属構造は重量が重く、高重量の欠陥を
生じる。加えて、アルミニウムは腐食ダメージを受けや
すい。
【０００３】重量欠点を低減しかつ音響特性を改良する
ために、逆推進装置内壁は炭素繊維層の間に挟まれたア
ルミニウムハニカムコアで作られている。アルミニウム
コアに隣接した炭素繊維のために、壁構造は特に水分が
存在するところでは電気化学的腐食を受けやすい。かか
る腐食は、容認し難いアルミニウムコアの構造的故障の
可能性を生じる。
【０００４】
【発明の概要】したがって、本発明は発生した重量欠点
を実質的に低減し、腐食しやすさを回避し、壁の強さを
維持し、かつ適切な熱電導性を維持して絶縁の必要性を
低減する、逆推進装置内壁構造を提供する。
【０００５】本発明に従って、逆推進装置壁はエポキシ
樹脂含浸穴あき炭素繊維布の最上層と、非金属複合ハニ
カムコアと、貫通孔のないエポキシ樹脂含浸穴あき炭素
繊維布の底部層とのサンドイッチ構造である。
【０００６】非金属ハニカムコアは炭素ピッチベースの
炭素繊維から作られ、必要な熱伝導性を達成する。壁の
熱伝導性が高レベルのために、エンジン熱は穴あき炭素
繊維の最上層へ伝えられる。最上層上に流れるエンジン
ファンの空気は熱シンクとして作用し、十分な熱がエン
ジンから運び去られて壁のエンジン側の絶縁の必要性を
最小にする。
【０００７】本発明の上記のおよび他の利点は添付の図
面に示された特徴とともに以下の好ましい実施例の詳細
な説明からより明白になるであろう。
【０００８】
【好ましい実施例の詳細な説明】図１に見られるよう
に、典型的な商業航空機ジェット動力装置１は、エンジ
ン２、関連したカウリング３、ファン４、および逆推進
装置カウリング５を含む。ファン４は空気流矢印７によ
って示されるように動力装置１に空気を流す。空気流７
はカウリング３に入り、逆推進装置内壁１０と逆推進装
置外壁１２との間の環状空気バイパスダクト８を通過す
る。
【０００９】動力装置１が動作している間、エンジン２
はかなりの量の熱を発生し、１１００°Ｆにまで達す
る。逆推進装置内壁１０の内部表面１４は高放射エネル
ギに直接露出される。内部表面１４上の絶縁（図示せ
ず）の必要性を低減するために、この逆推進装置内壁１
０は、熱をエンジン２から逆推進装置内壁１０を介して
逆推進装置内壁１０の相対的に冷たい外部表面１６へ伝
導するように設計される。外部表面１６上を通過する冷
たい空気流７は熱シンクとして作用する。こうして、逆
推進装置内壁１０の高熱伝導性により絶縁が少なくなり
かつ重量欠点が小さくなる。
【００１０】逆推進装置内壁１０に関連した重量欠点は
また、ハニカムコアにアルミニウムまたは他の材料を用
いる代わりに複合材料を用いることにより実質的に低減
される。この発明の逆推進装置内壁１０は以下に説明す
るように、すべて非金属性の構成要素を用いながら高熱
伝導性を維持する。
【００１１】図２に示されるように、逆推進装置内壁１
０は穴あき炭素繊維強化エポキシの最上層２０を有する
サンドイッチ構造である。貫通孔２２は、最上層２０が
貫通孔形成装置（図示せず）上で部分的に硬化するとき
にこの層中に作られる。貫通孔２２は逆推進装置内壁１
０の適切な音響特性を維持するように設計される。穴あ
き炭素繊維最上層２０の頂部面２４は動力装置１に設置
されるときに、空気流７と直接境を接する。
【００１２】網状接着剤の層２６は穴あき炭素繊維最上
層２０を熱伝導性非金属炭素ピッチ繊維ハニカムコア３
０に接着する。好ましい実施例において、接着層２６は
ボーイング・カンパニー（Boeing Company）仕様ＢＡＣ
5514-5137に規定されるような、ＢＭＳ 5-137音響パネ
ルのための構造的接着剤（Structural Adhesive forAco
ustic Panels ）を含む。
【００１３】熱伝導性の非金属含浸炭素ピッチ繊維ハニ
カムコア３０は含浸布強化シート３２からなり、波形に
なって特定のハニカムセル３５を形成し、それからボー
イング・カンパニー仕様ＢＭＳ 8-339に従ってポリイミ
ド接着樹脂で結合されかつポリイミド樹脂で覆われる。
炭素ピッチ繊維ハニカムコア３０は１．９から２．０５
Ｗ／ｍ ×°Ｋの範囲の熱伝導性を有する。この熱伝導
性特性は空気流７によって取除かれるべき十分な熱を伝
達し、それにより結果として生じる厚い絶縁層に関連し
た重量欠点を低減する。
【００１４】ボーイング・カンパニー仕様ＢＭＳ 8-339
に特定されるように、好ましい実施例中の炭素ピッチ繊
維ハニカムコア３０は、部品番号ＨＦＴ−ＧＰ−３２７
として、テキサス州グラハム（Graham）のヘキセル・コ
ーポレーション（Hexcel Corporation）によって製造さ
れる。アルミニウムハニカムコアと比較すると、ヘキセ
ル炭素ピッチ繊維ハニカムコア３０材料は、重量欠点を
２６％低減しかつ腐食しにくい。
【００１５】非金属非穴あき炭素繊維強化布のベース層
３８は、接着剤層４２によって炭素ピッチ繊維ハニカム
コア３０の底部表面４０に接着される。好ましい実施例
において、用いられる接着剤は、ボーイング・カンパニ
ー仕様ＢＭＳ 8-245に規定されるような複合ボンディン
グのためのＢＭＳ 8-245接着剤である。
【００１６】上述の逆推進装置内壁１０サンドイッチ構
造は、ボーイング・カンパニー仕様ＢＡＣ 5317-6 に従
って作られる。
【００１７】逆推進装置内壁１０の好ましい実施例は、
ベース層３８の底部に接着された絶縁層４５を有し、絶
縁層は動力装置に設置されたときにエンジン２に隣接
し、かつ最も近い層である。
【００１８】本発明の特定の実施例が説明されてきた
が、一方、本発明の精神および範囲を逸脱することなく
多数の修正および変化が本発明に対して可能であるとい
うことが当業者には明白であろう。
【００１９】したがって、本発明の範囲は前掲の特許請
求の範囲のエレメントの精神および範囲またはその相応
な等価物によってのみ限定されると考えられるべきであ
る。
【図面の簡単な説明】
【図１】典型的な商業航空機ジェット動力装置の断面図
である。
【図２】この非金属逆推進装置内壁の等角投影切取図で
ある。
【符号の説明】
１ 動力装置 ２ エンジン ３ カウリング ４ ファン ７ 空気流 ８ 空気バイパスダクト
─────────────────────────────────────────────────────
【手続補正書】
【提出日】平成５年１０月２２日
【手続補正１】
【補正対象書類名】図面
【補正対象項目名】全図
【補正方法】変更
【補正内容】
【図１】
【図２】

Claims (4)

    【特許請求の範囲】
  1. 【請求項１】 サンドイッチ構造を含む逆推進装置内壁
    であって、前記サンドイッチ構造は、穴あき炭素繊維強
    化非金属最上層と、熱伝導性非金属ハニカムコアと、炭
    素繊維強化非金属ベース層とを含む、内壁。
  2. 【請求項２】 前記最上炭素繊維強化非金属最上層はエ
    ポキシ樹脂含浸炭素布を含み、かつ前記熱伝導性非金属
    ハニカムコアはさらに含浸炭素ピッチ繊維ハニカムを含
    む、請求項１に記載の逆推進装置内壁。
  3. 【請求項３】 最上層と、頂部および底部表面を有する
    ハニカムコアと、ベース層とを含む逆推進装置内壁サン
    ドイッチ構造であって、前記最上層は穴あきエポキシ樹
    脂含浸炭素強化布を含み、前記最上層は接着手段で前記
    ハニカムコアの頂部表面に接着され、前記ハニカムコア
    は熱伝導性の炭素ピッチ繊維ハニカムコアを含み、前記
    ベース層は非穴あきエポキシ樹脂含浸炭素布を含み、前
    記ベース層は接着手段で前記ハニカムコアの前記底部表
    面に接着される、サンドイッチ構造。
  4. 【請求項４】 前記ハニカムコアは１．０９から２．０
    ５Ｗ／ｍ ×°Ｋの熱伝導性を有するハニカムを含み、
    かつ前記コアは前記最上および底部層に接着結合され
    る、請求項３に記載のサンドイッチ構造。
JP5195682A 1992-08-10 1993-08-06 逆推進装置内壁およびそのサンドイッチ構造 Withdrawn JPH06173772A (ja)

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US92644492A 1992-08-10 1992-08-10
US926444 1992-08-10

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JPH06173772A true JPH06173772A (ja) 1994-06-21

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US (3) US6210773B1 (ja)
EP (1) EP0586000B1 (ja)
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Also Published As

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US6440521B1 (en) 2002-08-27
US6051302A (en) 2000-04-18
DE69327373T2 (de) 2000-04-20
EP0586000B1 (en) 1999-12-22
US6210773B1 (en) 2001-04-03
EP0586000A1 (en) 1994-03-09

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